Flic.kr URL Generation Script

#!/usr/bin/env ruby

# Copyright (c) Douglas F Shearer 2009
# http://douglasfshearer.com
# Distributed under the MIT licence.

# Converts a flickr.com user or photo URL to a flic.kr short URL.
#
### User example:
#
# $ ./flic.kr http://www.flickr.com/photos/douglasfshearer/
# Result added to clipboard:
#
# http://flic.kr/douglasfshearer
#
### Photo example:
#
# $ ./flic.kr http://www.flickr.com/photos/douglasfshearer/337366577/
# Result added to clipboard:
#
# http://flic.kr/p/vP6k8

require 'rubygems'
begin
  require('base58')
rescue LoadError
  puts '[Error] base58 gem not installed: http://github.com/dougal/base58/'
  Process.exit(0)
end

if ARGV[0][/photos\/[^\/]+\/(\d+)/]
  result =  "http://flic.kr/p/#{Base58.int_to_base58($1.to_i)}"
elsif ARGV[0][/photos\/([^\/]+)/]
  result = "http://flic.kr/#{$1}"
end

if result
  `echo #{result} | pbcopy` # Mac OS X Specific.
  puts "Result added to clipboard:\n\n"
  puts result
else
  puts 'URL not matched'
end